Sucker rod pump parts to prevent gas locking and or sand damage

Conn Pumps supplies three products. They are CONN SUCKER ROD SAND pumps to be used where sand, grit, iron sulfide, coal fines and other debris cause premature pump failure. The second are ANTI SAND PLUNGER ASSEMBLIES that can be integrated into existing API rod pumps in order to modify a pump that will work where sand, grit, iron sulfide, coal fines and other debris cause premature pump failure. The third product is THE ANTI GAS LOCKING VALVE for elimination of bottom tagging, gas interference, and gas locked pumps.